Joseph leather



J. LEATHER.

VENTILATOR.

I (No Model.)

Patented Aug. 6, 1895.

UNITED STATES JOSEPH LEATHER, OF LIVERPOOL, ENGLAND.

PATENT OFFICE.

VENTI'LATO R.

SPECIFICATION forming part of Letters Patent No. 543,995, dated August6, 1895.

Application filed October 26, 1894- Serial No. 527.063- (No model.)Patented in England November '7. 1890, No. 17,902, and February 16,1891,N- 2.'759,' in France November 12, 1890, No. 209,453; in BelgiumNovember 13,1890, No. 92,711,

and in Austria-Hungary June 8, 1891.

To aZZ whom it may concern:

Beit known that I, JOSEPH LEATHER, a subject of the Queen of GreatBritain, residing at Liverpool, in the county of Lancaster, England,have invented anew and useful Improvement in Ventilators, (for which Ihave ventilator constructed in accordance with my invention. Fig. 4 isan elevation, Fig. 5 is a plan, and Fig. 6 is a section at the line A A,v

of a more simple construction of the ventilator than that shown in Figs.1, 2, and 3.

In all the views the same letters denote equivalent parts.

. admission and emission of air to and from structures; second,preventing strong drafts, and, third, preventing dust and solidparticles (say from a locomotive) from entering the structure with theinflowing air. The feature (third) last above referred to is of greatmoment.

a represents the top of a railway-carriage door or other suitablesupport or carrier for the ventilator.

b is a divided projecting piece with a through way or passage 0, openingto an air way or aperture d,which leads from the structure to beventilal ed.

The line d indicates a door opening outward'to prevent the inflowthrough the way or passage d.

e e are air ways or apertures leading into the structure to beventilated. The air ways or apertures e e are fitted with louvers fpiv-v oted at g to the support or carrier a, so as to be capable ofbeing turned, as shown, to admit air into the structure in an upwarddirection, and so prevent strong drafts. The louver f is stationary, so'that the four airways formedare closed by the two louvers. More or lessair will be admitted'according as the louvers are turned, so as to moreor less open the air ways or aperturesee. The projection 17 is made withcurved surfaces b, angle deflecting-surfaces b and turned-up flanges bIf a current of air is passing across the pro jecting piece I) in thedirection of the arrow, air will be drawn or educed through the air wayor aperture 61 and through way or pas sage c of the structure, while airstriking back, but travel on with the air, which is de- ,7

fiected sidewise and outward. Hence only clean air enters the structure.Any dust or solid particles which might tend to travel back are caughtby the turned-up edge of the flange b Referring to Figs. 4, 5, and 6,the projecting piece b has no through way or passage and the air isdeflected back-say, through one air way or aperture e, and educedthrough the other air way or aperture 6. Here the pivoted louvers f areof slightly-modified construction and do not project beyond the supportor carrier. It is obvious that the greater the number of louvers thegreater the division of the entering ai-r'currents.

When the current of air is in the opposite direction to that shown bythe arrow, the fresh air enters through the air way or aperture 6' andvitiated air is educed through the apertures d and c.

I claim- '1. In ventilating apparatus, the combination with a supporthaving an aperture, of a projecting piece at one side of the same andIOC of a projecting piece having an air-Way in register with an air-Waythrough the support and being provided with curved surfaces locatedbetween and arranged to act in conjunction with said apertures, saidprojecting piece having deflecting pieces and turned-up flanges tointercept dust or other particles; substantially as described.

JOSEPH LEATHER. Witnesses:

J. JOHNSON, J'No. Gnooorr.

